Cisco ONS 15454 SDH Specifications Page 244

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5-54
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 5 SDH Topologies
Creating Linear ADM Configurations
b. From the Protection Groups list, choose the 1+1 group you want to delete. Click Delete.
c. Click Yes on the confirmation dialog box.
d. Verify that no traffic disruptions are indicated on the test set. If disruptions occur, do not proceed.
Recreate the protection group and isolate the cause of the disruption.
e. Continue deleting 1+1 protection groups while monitoring the existing traffic with the test set.
Step 7 Physically remove one of the protect fibers running between the middle and end nodes. For example, in
Figure 5-40, the fiber from Node 2/Slot 13 to Node 3/Slot 13 is removed. The corresponding STM-16
card will cause an LOS condition for that fiber and port.
Figure 5-40 Converting a linear ADM to an SNCP ring
Step 8
Physically reroute the other protect fiber to connect the two end nodes. In the Figure 5-40 example, the
fiber between Node 1/Slot 5 and Node 2/Slot 5 is rerouted to connect Node 1/Slot 5 to Node 3/Slot 13.
If you are leaving the STM-N cards in place, proceed to Step 13. If you are removing the cards, complete
Steps 9 12. (In this example, cards in Node 2/Slots 5 and 13 are removed.)
Step 9 In the middle node, place the cards in Slots 5 and 13 out of service:
a. Display the first card in card view and choose the Provisioning > Line tabs.
b. Under Status, choose Out of Service. Click Apply.
c. Repeat Steps a and b for the second card.
Step 10 Delete the equipment records for the cards:
a. Display the node view.
b. Right-click the card you just took out of service (e.g. Slot 5) and choose Delete Card.
c. Click Yes on the confirmation dialog box.
d. Repeat Steps a c for the second card (e.g. Slot 13).
Step 11 Save all circuit information.
a. In node view, choose the Provisioning > Circuits tab.
Slot 6 to Slot 6
Linear
ONS 15454 SDH
Node 1
Slot 5 to Slot 5
Slot 12 to Slot 12
ONS 15454 SDH
Node 2
Slot 13 to Slot 13
ONS 15454 SDH
Node 3
Slot 6
(East)
SNCP
ONS 15454 SDH
Node 1
ONS 15454 SDH
Node 2
ONS 15454 SDH
Node 3
Slot 6
(West)
Slot 12
(East)
Slot 12
(West)
Slot 13
(East)
Slot 5
(West)
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